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Crustal structure of the western New England Appalachians and the Adirondack Mountains

Journal of Geophysical Research

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Abstract

Presents an interpretation of the crustal velocity structure based on a seismic refraction/wide-angle reflection experiment in eastern North America extending from the Adirondacks in New York State through the northern Appalachians in Vermont and New Hampshire to central Maine. Modeling of the eastern portion of the profile within the New England Appalachians shows a subhorizontal layered crust with upper crustal velocities ranging from 5.5 to 6.2 km/s, a midcrustal velocity of 6.4 km/s, and a lower crustal velocity of approximately 6.8 km/s. Crustal thickness increases from 36 km beneath Maine to 40 km in Vermont. This experiment provides further evidence for the obduction of the allochthonous western Appalachian units onto Grenvillian crust above the azone of detachment that penetrates at least to midcrustal depths and was the locus of successive Paleozoic thrusting. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Crustal structure of the western New England Appalachians and the Adirondack Mountains
Series title:
Journal of Geophysical Research
Volume
96
Issue:
B10
Year Published:
1991
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Geophysical Research